Every year between the ages of 25 and 60, the physically inactive male will lose muscle mass and muscle strength at a rate of 0.5 percent and although this number may seem low, it adds up quickly. After the age of 60, male muscle loss doubles to about 1 percent every year. After 70, muscle mass and muscle strength declines by 2percent every year. This doubling continues every ten years until death.
Definition of intestine : the tubular part of the digestive tract that extends from the stomach to the anus â compare large intestine, small intestine See intestine defined for English-language learners
large intestine. The wide lower section of the intestine that extends from the end of the small intestine to the anus. The large intestine acts mainly to absorb water from digested materials and solidify feces. In most vertebrate animals, it includes the cecum, colon, and rectum.